Hi,
I am new to SATA driver development. Here i have few questions.
I am able to understand how SATA driver will send FISes to device.
I would like to know how the received FISes are handled in case of
FISes come from the device? These FISes are copied in a special area
whose base address is giv
Hi,
As far as I understand, spin_lock_bh will disable all softirqs and
spin_lock_irqsave will disable all interrupts and save the flags.
#1.
- One interesting I found is that many drivers use spin_lock_irqsave in
their ioctl and their bottom-half routine rather than spin_lock_bh in
even bott
Hi,
On Mon, Aug 9, 2010 at 6:15 AM, Parmenides wrote:
> Hi,
>
> In the following code excerpt of kernel, why the 'count' field is
> set by atomic_set while other fields of tha same structure can take an
> assignment directly?
It depends on how the variables are used.
> void tasklet_init(struc
Syed Khader wrote:
I'm developing a kernel module (sorry under nda till product release so
no code available) which is currently allocating ~6MB of buffers (3 x
2MB buffers) with pci_alloc_consistent for dma usage, it will be less
later on but for now the hardware requires this.
Is sw
>>> I'm developing a kernel module (sorry under nda till product release so
>>> no code available) which is currently allocating ~6MB of buffers (3 x
>>> 2MB buffers) with pci_alloc_consistent for dma usage, it will be less
>>> later on but for now the hardware requires this.
>>>
>>
Is swap enable
On Mon, Aug 9, 2010 at 17:00, Tapas Mishra wrote:
> Probably some one on this list may give me some idea to which
> direction I should look or think.
> This question is not for kernel development but it is a problem I
> am facing.
>
> I have multiple video streaming servers running on my LAN.
Eve
On Mon, Aug 9, 2010 at 21:42, Harsh Kumar wrote:
> Hi,
> I am new to Kernel Programming and would like to know whats the best way to
> start understanding the code structure.
> Is debugging the kernel possible by putting breakpoints?
> Can someone of you please help me start.
None of the method i
http://stackframe.blogspot.com/2007/04/debugging-linux-kernels-with.html
This works great for me.
Shailesh Jain
Disclosure: I have lot to do with the company.
On Mon, Aug 9, 2010 at 7:42 AM, Harsh Kumar wrote:
> Hi,
> I am new to Kernel Programming and would like to know whats the best
Hi...
On Mon, Aug 9, 2010 at 20:15, Parmenides wrote:
> Furthermore, the definition of atomic_set is as follows
>
> #define atomic_set(v,i) (((v)->counter) = (i))
>
> and there is seemingly no 'atomic feature' at all.
You bet...however, IIRC, atomic type in x86 32 bit is unsigned long
an
Hi,
You know, the most important point of doing variables atomic is to avoid race
conditions when writing simple variables/Entities in a Multithreading code, but
you are right in the macro definition you mentioned below, which doesn't appear
to be atomic at all.
You know, the best way of d
On Mon, Aug 9, 2010 at 9:42 AM, Harsh Kumar wrote:
> Hi,
> I am new to Kernel Programming and would like to know whats the best way to
> start understanding the code structure.
> Is debugging the kernel possible by putting breakpoints?
> Can someone of you please help me start.
>
> Regards,
> Hars
Hi,
You know, the most important point of doing variables atomic is to avoid
race conditions when writing simple variables/Entities in a multi-threading
code, but you are right in the macro definition you mentioned below, which
doesn’t appear to be atomic at all.
You know, the best way of doing t
Posting again since seems that my email box is not working properly.
From: Castillo Fuentes, David
Sent: Monday, August 09, 2010 9:56 AM
To: 'Parmenides'; kernelnewbies@nl.linux.org
Subject: RE: applying atomic assignment in which situation
Hi,
You know, the m
Hi,
I am new to Kernel Programming and would like to know whats the best way to
start understanding the code structure.
Is debugging the kernel possible by putting breakpoints?
Can someone of you please help me start.
Regards,
Harsh Kumar
Hi,
In the following code excerpt of kernel, why the 'count' field is
set by atomic_set while other fields of tha same structure can take an
assignment directly?
void tasklet_init(struct tasklet_struct *t,
void (*func)(unsigned long), unsigned long data)
{
t->func = f
Hi Mulyadi,
Thanks for the response.
Mulyadi Santosa wrote:
On Sun, Aug 8, 2010 at 22:13, Philip Downer wrote:
Hi folks,
I'm developing a kernel module (sorry under nda till product release so
no code available) which is currently allocating ~6MB of buffers (3 x
2MB buffers) with pci_allo
Probably some one on this list may give me some idea to which
direction I should look or think.
This question is not for kernel development but it is a problem I
am facing.
I have multiple video streaming servers running on my LAN.
For different subdomains.
i.e.
site1.mydomain.com
site2.mydoma
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